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you probably have a faulty abs sensor, the whole system gets information from the abs. If that sensor is reading improperly, it thinks the car is doing something it's not supposed to and it's reacting.
Hi!! When Yellow ABS warning light illuminates during normal operation, the system has detected a problem and has stored a Diagnostic Trouble Code (DTC). Loss of power to module will cause system to be deactivated and Yellow ABS warning light to be illuminated. This fault will not set a DTC. The Rear Anti-Lock Brake System II (RABS II) Speed Sensor is located on the Rear Differential Case. This sensor sends the speed signal of the rear tires to the RABSII Control Module, which also receives the Turbine Shaft Speed Sensor. The RABSII Control Module uses both signals to control the RABS II Proportioning Valve. If the RABSII Control Module does not receive both signals, the ABS Light will come ON. Finally, the Sensor I think is giving you trouble.The Turbine Shaft Speed (TSS) Sensor is located on the transmission tail. This sensor sends the speed signal to the PCM which in turn sends it to the Speedometer and to the RABSII Module. If this sensor is disconnected or inoperative, the Speedometer won't work and the ABS light will come ON. Check electrical connector to the sensor, make sure is clean, free of corrosion and properly connected. Before you replace the sensor, have the computer codes scanned for FREE at AutoZone, Checkers or similar autoparts store. Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.
i think there is only one, it is connected to the exhaust manifold just before the cat, if you check all away allong you might find another just before the rear muffler?silencer/back box, the first one is called the heated oxygen sensor (ho2s) but i think there is only one...hope this helps
cant remember properly but i think you hold the trip meter switch in and then turn ignition to accessory ,and still hold it down then turn to ignition and something flashes on dash and you go through sequence using the radio volume button on the steering wheel .well something like that
ON ALL A4 MODELS AND I THINK THE A3 , THE ENGINE COOLANT TEMPERATURE SENSOR IS LOCATED AT THE REAR OF THE CYLINDER HEAD,WHILST ON SOME ENGINES, A SECOND SENSOR IS FITTED TO THE RADIATOR OUTLET PIPE...HOPE I WAS OF SOME HELP TO YOU....
Hi, had total issues with this too! Your back speakers arent going because they are amped by the factory amp in the boot. You have to provide power to the amp so that it will turn the rear speakers on. This was a white and black striped wire in my car (Audi A3 1997) The rear speakers are blue /green and brown/red (left rear) , and the LH rear is brown/red and (forgotten colour) but the wire on the bottom left under those two brown/red wires on the 20pin harness. If you wire it all up like this then your rears should be going :)
if you have diagnostic equipment you will be able to see the signal through serial data(if you believe it)the cranksensor is located near the rear of the engine pointing towards the radiator i think it goes to a grey plug....
How do I locate the sensor on a 2003 A4 1.8L? I see a blue sensor on the right by the firewall, and a green sensor on the left nearer to the battery on the left. Is it possible that I already have a green sensor in my car?